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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
Sorting is efficient when the input data is small. For large data set would be efficient.
I agree with the previous commentator, I forgot about sets and sorting)).
I consider this solution to be the most understandable and concise than the solution at the top of the list. The only question regarding the speed of code execution is - what will be faster, sorting or converting to a set?